Samuel donaldson



(No Model.)

- v Sf-DONALDSONY Attachment to Pumps.

Nm'xmw 3 M] wk 1 M ZM I mm mm OLITHOGRLPHER. WLSHINGYOM 5 C UNITED STATES ATENT QFFIC'EO SAMUEL DONALDSON, OF ALTOONA, IOWA, ASSIGNOR OF TWO-THIRDS TO A. L. MCWHORTER AND JACOB P. CLAYTON, OF SAME PLACE.

ATTACHMENT TO PUM PS.

SPECIFICATION forming part of Letters Patent No. 235,938, dated December 28, 1880,

Application filed July 10, 1880. (No model.)

To all whom it may concern: S is a vertical bore connecting the horizon- Be it known that I, SAMUEL DONALDSON, tal bore r with the lower end of the cylinof Altoona, in the county of Polk and State der G.

of Iowa, have invented an Improved Deept is a check-valve that prevents the water 5 5 Well Pump, of which the following is a specifrom flowing back into the cylinder G during fication. the upward movement of the piston It.

My object is to provide a simple, cheap, and In the practical use of my invention the effective pump for raising water easily from second cylinder, G, and its piston and operatwells that are too deep for common suction or ing mechanism may be advantageously atto lift pumps; and my invention consists in tached to any common lift-pump in a well combining a cylinder and piston with the that is over thirty feet deep in the manner lower end of the well-tube of a lift-pump and shown and described, or in any suitable way, an operating lever at the top of the pump, as so that the water can be pressed out of the hereinafter fully set forth. lower and submerged cylinder into the well- 15 My accompanying drawing is a side view of tube by the downward stroke of its piston at my pump, in which. sections of the tube and the same instant that water is lifted in the cylinders are removed to show the pistons and well-tube by the upward stroke of the piston Valves. in the upper cylinder.

A A represent a wooden pump and well- Any suitable material maybe used in the l 20 tube of common form. construction of the pump and well tube, cyl- B is a cylinder formed in or attached to the inders, pistons, and valves, and size and form pump and tube, as required in the construcmay vary as desired. tion of a common lift-pump. 1 am aware that two pistons have been. rigc is a hollow piston, operated in the cylinidly connected with a cross-head at the top of a 7 5 25 der B by means of a piston-rod, d, connected pump, to be jointly operated in adouble cylinwith the short arm of the lever-handle f, that der to simultaneously draw and force water is attached to the top of the pump in a cointhrough flexible hose connected with thedouble mon way to be operated as a lever of the first cylinder; but my manner of forming and atorder. taching a cylinder and piston to the lower end 3o Gis asecond cylinder, fixed to the lowerend of a well-tube and a common pump-handle of the well-tube by means of a clamping-yoke, and lever of the first order at the top of the h, or in any suitable way. pump, to produce a lever of the second order k is a second hollow piston, operated in the and a compound lever, is greatly advantagesecond cylinder, by means of a piston -rod, ous in elevating water from deep wells, in 5 Z, that extends upward outside of the wellthat the lower and submerged cylinder and tube, and is connected with the long arm of piston force water upward from the bottom the lever-handle f in such a manner as to pro of the well from a depth that cannot be duce a lever of the second order, adapted to reached by the suction-force of the upper cyloperate the piston k, and also a compound leinder and piston. o ver, that is adapted to operate the two distinct I claim as my in ventionpistons simultaneously-the one to lift water In a pump, the combination of the wellby suction and the other by pressure. To tube A, the cylinder 13 and its piston, the cylsteady the outside piston-rod, one or more inder G and its piston, the lever-handlef, and bearings, m, may be attached to the well-tube the piston-rods d and Z, substantially as shown 45 in any suitable way. and described, to operate in the manner set a is a clack-valve on the under side of the forth, for the purposes specified.

hollow piston 70.

r is ahorizontal bore, extending from the SAMUEL DONALDSON' bore in the lower and closed end of the well- Witnesses: 5o tube into the lower and closed end of the cyl- GEO. JOY,

inder G. A. B. J oHNsoN. 

